Physicochemical Properties of Heavy Oil-Water Interface in the Context of Oil Removal from Seawater by Froth Flotation

2014 ◽  
pp. 279-294
Author(s):  
Louxiang Wang ◽  
Meghan Curran ◽  
Meijiao Deng ◽  
Qingxia Liu ◽  
Zhenghe Xu ◽  
...  
Keyword(s):  
Physicochemical Properties ◽  
Heavy Oil ◽  
Froth Flotation ◽  
Water Interface ◽  
Oil Removal ◽  
Oil Water

MICROBIAL DEGRADATION OF A LOUISIANA CRUDE OIL IN CLOSED FLASKS AND UNDER SIMULATED FIELD CONDITIONS

1971 ◽  
Vol 1971 (1) ◽  
pp. 287-296 ◽  
Author(s):  
Howard Kator ◽  
C. H. Oppenheimer ◽  
R. J. Miget
Keyword(s):  
Crude Oil ◽  
Aromatic Compounds ◽  
Incubation Temperature ◽  
Field Conditions ◽  
Microbial Culture ◽  
Water Interface ◽  
Oil Removal ◽  
Oil Slick ◽  
Oil Water ◽  
Simulated Field

ABSTRACT Petroleum utilizing microorganisms in flasks containing enriched seawater exhibited a clear metabolic preference for saturated paraffins in a Louisiana crude oil. The rates of oxidation of these compounds were directly proportional to incubation temperature and roughly doubled with a ten degree increase. A pattern of growth consisting of an initially large rate of saturated paraffin oxidation, followed by a decrease and another increase in rate was observed. The initially large rates were attributed to the metabolism of n-paraffins smaller than C-18. No even or odd chain length preference for n-paraffins was indicated. There was no evidence of utilization for aromatic compounds. Application of a microbial culture to an oil slick under simulated field conditions, clearly showed that microbes could accelerate the removal of a Louisiana crude oil from an oil slick on seawater. The rates of oil removal in outdoor, exposed conditions, were twice as large as the rates of evaporative oil loss. The microbes produced a significant change in oil “stickiness”. Measurements indicated the oil was dispersed through microbial activity. The cells preferentially remained at the oil-water interface during the experimental periods.

scholarly journals Formulation, Stability and Physicochemical Properties of Pickering Emulsions: An Overview

2019 ◽  
Vol 11 (1) ◽  
pp. 41 ◽  
Author(s):  
Papa Mady Sy ◽  
Sidy Mouhamed Dieng ◽  
Mounibe Diarra
Keyword(s):  
Pharmaceutical Industry ◽  
Physicochemical Properties ◽  
Solid Particles ◽  
Water Interface ◽  
Pickering Emulsions ◽  
Internal Phase ◽  
Potential System ◽  
Oil Water ◽  
Formulation Stability ◽  
Targeted Release

This review work focuses mainly on the formulation, characterization, physicochemical properties and parameters of stability of emulsions stabilized by solid particles (Pickering emulsions). This concept of emulsions stabilized by particles strong knows a renewed interest in our days saw the benefits they present: good stability, protection of the environment, safety of users, types of particles etc. The adsorption of the solid particles at the oil-water interface is almost irreversible and strong, leading to the formation of a dense film, creating a barrier around the droplets and thus making the droplets very resistant to coalescence. Recently, the possibilities of application of emulsions stabilized by particles are considered in the pharmaceutical industry. This type of formulation may be a potential system of encapsulation of the active ingredients, allowing controlled and targeted release of the active ingredient from the internal phase.

Porous materials from cellulose nanocrystal and mxene surfactants at the oil/water interface

2020 ◽  
Author(s):  
Bingqing qian ◽  
Haiqiao Wang ◽  
Dong Wang ◽  
Hao-Bin Zhang ◽  
Jessica Wu ◽  
...  
Keyword(s):  
Porous Materials ◽  
Cellulose Nanocrystal ◽  
Water Interface ◽  
Oil Water

Polarizability and nonpolarizability of oil-water interfaces with relevance to a.c. impendance measurements

1991 ◽  
Vol 56 (1) ◽  
pp. 112-129 ◽  
Author(s):  
Takashi Kakiuchi ◽  
Mitsugi Senda
Keyword(s):  
Charge Transfer ◽  
Numerical Calculation ◽  
Supporting Electrolyte ◽  
Water Interface ◽  
Migration Effect ◽  
Ac Current ◽  
Stationary Interface ◽  
Oil Water ◽  
Anion Transfer

We have estimated the degree of polarizability of a polarized oil-water interface used as a working interface and that of the nonpolarizability of a nonpolarized interface used as a reference oil-water interface from the numerical calculation of dc and ac current vs potential behavior at both interfaces. Theoretical equations of dc and ac currents for simultaneous cation and anion transfer of supporting electrolytes have been derived for the planar stationary interface for reversible and quasi-reversible cases. In the derivation, the migration effect and the coupling of the cation and anion transfer have been incorporated. The transfer of ions constituting a supporting electrolyte contributes to the total admittance of the interface even in the region where the interface may be considered as polarized in dc sense, as pointed out first by Samec et al. (J. Electroanal. Chem. 126, 121 (1981)). Moreover, the reference oil-water interface is not ideally reversible, so that the contribution from this interface to the measured admittance cannot be negligible, unless the area of the reference oil-water interface is much larger than that of the working oil-water interface. The effect of non-ideality of the reference oil-water interface on the determination of double layer capacitances and kinetic parameters of charge transfer at the working oil-water interface has been estimated.

The relevance of “HLB” to de-emulsification of a mixture of heavy oil, water and clay

1980 ◽  
Vol 58 (5) ◽  
pp. 576-579 ◽  
Author(s):  
David G. Cooper ◽  
J. E. Zajic ◽  
Edward J. Cannel ◽  
Joan W. Wood
Keyword(s):  
Heavy Oil ◽  
Oil Water
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